#!/bin/bash

set -eo pipefail

hasunset=0

if [ "$UID" != "0" ]; then
	 echo "This script must be run in root."
	 exit 2
fi

PATH="$PWD/scripts:$PATH"

if [[ "$CLOUD_CONFIG_REPO" -eq "" ]]; then
    echo "CLOUD_CONFIG_REPO is not set."
    CLOUD_CONFIG_REPO="https://git.sfclub.cc/cloud/bearnet"
    hasunset=1
fi

if [[ "$CLOUD_CONFIG_REVISION" -eq "" ]]; then
    echo "CLOUD_CONFIG_REVISION is not set."
    CLOUD_CONFIG_REVISION="wish"
    hasunset=1
fi

if [[ "$CLOUD_GATEWAY_ADDRESS" -eq "" ]]; then
    echo "CLOUD_GATEWAY_ADDRESS is not set."
    CLOUD_GATEWAY_ADDRESS="10.0.0.119"
    hasunset=1
fi

TMP_DIR=$(mktemp -d)

if [[ "$hasunset" -ne 0 ]]; then
    echo ""
    echo "Default values will be used for unset environments:"
    echo ""
    set | grep -E "^CLOUD_"
fi

cleanup_() {
    rm -rf $TMP_DIR
}

trap cleanup_ INT TERM EXIT

IMAGE_TAG=$(git rev-parse --short HEAD)
IMAGE_NAME=${IMAGE_NAME:-bearcloud}

echo "Image tag: $IMAGE_NAME:$IMAGE_TAG and $IMAGE_NAME:latest"
echo "Additional arguments: $@"
echo "Continue?"
read

rm -rf "$TMP_DIR"
cp -r ./image $TMP_DIR
sed -i "s#_REPO_#$CLOUD_CONFIG_REPO#g" $TMP_DIR/overlay/daemon/update-keys.sh && \
sed -i "s#_REVISION_#$CLOUD_CONFIG_REVISION#g" $TMP_DIR/overlay/daemon/update-keys.sh && \
sed -i "s#GATEWAY_ADDRESS#$CLOUD_GATEWAY_ADDRESS#g" $TMP_DIR/overlay/etc/dhcp/dhclient.conf

pushd $PWD >/dev/null

cd $TMP_DIR
export IMAGE_ARTIFACT="$PWD/vm.raw"
rm -f vm.raw && ./build-image.sh
if [ ! -f $IMAGE_ARTIFACT ]; then
    exit 2
fi

popd > /dev/null

mv $IMAGE_ARTIFACT ./data/
IMAGE_ARTIFACT="$PWD/data/vm.raw"

docker build -t "$IMAGE_NAME:$IMAGE_TAG" -t "$IMAGE_NAME:latest" $@ .